I would like to know if it is possible to plan an improvement of the script addlist: sequential addittion of variables to a model made by Allin Cottrell. Now the script return the best combination of regressors on the bae of AIC. It coluld be useful to print all the combinations between regressor in order for a better evaliation of the regressor (in same cases). I thing that an array could be used in order to move the regressors from one list1 to list0 and, in a loop print the results of OLS. Unlikely I'm not so expert and I'm not able to create the correct array. Any suggest will be appreciated Thanks in advance alberto